var tools = {
    queryString: function() {
        var search = location.search.slice(1);
        var searchArr = search.split('&');
        var queryObj = {};
        for (var i = 0; i < searchArr.length; i++) {
            var temp = searchArr[i].split('=');
            queryObj[temp[0]] = temp[1];
        }
        return queryObj;
    }
}